Valve mechanism.



D. RONCNI.v

VALVE MECHANISM.

APPLICATION FILED IAN. Ia. I9Ir.

1,241,662. Patented Oct. 2,1917.l

2 SHEETS-SHEET l.

'Digi INVENTOR @omen z'coloncon i.

ATTORNEYS D. RONCONI.

VALVE MECHANISM.

APPLICATION FILED 1AN.1a.|9|1.

Patented Oct. 2,1917.

2 SHEETS-SHEET 2.

INVENTOR 0o menz Zoncon zi.

ATTORNEYS DOMENICO RONCONI, OF CHICAGO, ILLINOIS.

A VALVE MECHANISM.

Specification of Letters Patent.

Application led January 18, 1917.

To all tf1/wm t may concern Be it known that I, Domenico Ronconi, a subject of the King of Italy, at present residing in Chicago, in the county of Cook and State of Illinois, have invented a new and Improved A`Valve Mechanism, of which the following a specification.

My present invention, which in its general nature has reference to improvements on the valve mechanism especially adapted for use in internal combustion engine structures, more specifically seeks to provide an improved oscillatory valve mechanism ofl that type shown and described in my copcnding application, Serial No. 130,878, filed November 11, 1916, `to which my present improvements especially apply.

Among other objects, my present invention has for its purpose to provide an improved construction of the valve member, the scat on which it oscillates and the means effecting the oscillation thereof, whereby a less number of parts are needed for actuating the valve and the operation thereof is rendered the more silent and positive for the shiftin durations required.

Anot er object of my present invention is to provide an improved oscillatory valve structure of the general type referred to in which the parts are particularly designed for providing an improved self-grinding valve and a cooperative valve seat construction, by which the fitting of the valve and its seat is easily effected and rendered positive and noiseless in its action.

With other objects in view that will hereinafter appear, my present invention is an improved valve mechanism of the general character stated, that comprises the peculiar features of construction and novel coperative arrangement of parts that will be first explained in detail, specifically pointed out in the appended claims and illustrated in the accompanying drawings, in which:

Figure 1 is a vertical section of my improved valve mechanism, so much of the head portion and the cam shaft of an internal combustion engine being shown, as is necessary to illustrate a practical application of my invention.

Fig. 2 is a top plan View thereof, the upper or cap portion of the engine head being omitted.

Fig. 3 is a transverse section of my new valve mechanism taken on the line 3-3 on Fig. 1.

Patented Oct. 2, 1917.

Serial No. 143,066.

Fig. 4s is a diagrammatic plan view that illustrates the cooperative arrangement of the shaft actuated rotary cam devices and the cam device `on the valve stem, hereinafter specifically referred to.

Fig. 5 is a top view of the valve seat.

Fig. G is a perspective view of one of the valve stem oscillating cams.

Fig. 7 is a perspective view of the check or stop device for restricting the oscillations of the valve.

Fig. 8 is a vertical section of a modification, hereinafter referred to.

Fig. 9 is a plan view of a modified form of the oscillatory valve.

Fig. 10 is a similar view of a modified form of seat plate for coperating with the said valve.

In the practical application of my present invention, in the general arrangement thereof, the same is combined with the engine cylinder in a manner similar to the arrangement of the valve mechanism disclosed in my copcnding application, before referred to.

It should be here stated that the valve in the construction shown in my copcnding application, of the oscillatory type, is oscillated or turned in one direction by mechanism actuated by power transmission from the engine shaft and it is pulled or oscillated back in the other direction, by other means not actuated by the engine shaft power.

The seat 2, in my present construction of valve mechanism, is removably mounted on a sub-seat 2 that forms the bottom of the valve chamber G and, which, has the intake (or exhaust) manifold duct It.

The valve seat 2 includes a hollow stem which constitutes a bushing and which extends down through a hub 2b and the lower end of such hollow stem projects below the huh 2b and has external screw threads 16, as is clearly shown in Figs. 1 and 3 in which is also indicated the position of a stopping device 12, the detail construction of which will presently more fully appear, a lock nut 14 and a jam nut 13, the latter being provided for holding the valve seat tightly to its seat.

The stopping device 12 which is shown in detail in Fig. 7, includes an apertured ring like body 12 that tits over the stem 1n and a segmental` extension 3-1, the opposite edges of which terminate in pendent stop lugs 35 ripheralI edge thereof anda central hub likel that coperate with a screw pin 37 which passes through the valve stem 1, as shown, and to hold the device 12 to its proper operative position, a pin 15 passes up throughan aperture 33 'therein and into a corresponding aperture2L in the `valve casing, as is clearly shown in Fig. 1.

3 designates what 1 hereinafter term the double cam and the said cam is iXedly held on the squared lower end of the valve stem by lock nut 26 and cotter pin 27.

A light tension coil spring 17 is held about the valve stem between the valve `chamber hub and the Cam 8 and which tends to at all times hold the valve against its seat.

1S designates what-is hereinafter termed the cani shaft uponwhich are adjustably mounted a pair of cams 4 and 5 which operate for oscillating the valve to the opening and closing positions.

The valve opening camI 5 `includes a segment shaped lugl or shoulder 6 at the 'pemember 19-19l and the closing valve 4 has a like shaped lug 7 and a hub portion 19, as

is clearly shown in Fig. 1 from which it will also be seen that each of the said cams 4 and 5 hasan outwardly extended fiange 21 formed with an elongated slot 21a whose op-4 posite side edges have semi-circular indentations 22 ada ted for bein@` brought into register with a corresponding aperture 18a' "in the squaredportion of the cam shaft 18 and which receives lock pins or bolts 50-50, it being understood that the cams after they are moved along the shaft to the desired adjustment may be locked to such adjustments` by passing the bolts 50 into the holes 18a and in lengagement with the coincident indenta-r tions 22, as shown.

To provide for maintaining a positively rigidrelation of the oppositely disposed cams 4 and 5, spacers in the nature'of thiny washers 20 are located on the shaft 18 between the adjacentends of the cam hubs 19 and to provide for con'veniently'applying or removing them, the `said washers' are of the Apeculiar design illustrated in Fig.A 3, which shows the washers as having an aperture 28.

Y jected wings or projections@ and y of the said cam are relatively disposed at predetermined angles, for example, 17So to1200,

depending upon the oscillatory or timing operations to be given to the said valve.

One of the essential features of my present invention is that t-he operation of oscillating the valves is a positive and a practically noiseless one, since the opening and closing cams are so mounted upony the cam shaft that after the opening cam has shifted the valve to open the valve port to the port R and breaks `contact with the double stem now holding the valve to its last shifted or open position, and with the cam 3 in position for being engaged by the closing cam 4, that follows the cam 5, and by which the valveV is now oscillated to the opposite or closing position where it is again held under its spring tension until the cam 3 is next engagedby the opening cam 5.

v The timing of the means for oscillating the vvalve in my present valve mechanism "isreadily accomplished by reason of the manner in which the cams 4 and' 5 are adjustably'mounted on the camshaft, as hereinbefore described. p

V To provide for the' desired adjustments to produce the predetermined timing of the opening and closing operations, for the intake or exhaust valveidevices, it is only necessary toloosen the bolts 23 sufliciently that one or more of the spacer washers 20 may be pulledout and correspondingadjustinents made of theparts 21 and 22,

'should such parts be 'used inv conjunction with the spacer washers 20, it being understood that itis not absolutely necessary to use the boltlocks 50 when the washers 20 are employed. i y

By removingoneor more of the washers 20, the two cams 4 and 5 'may be readily moved closer to' each other and by reason thereof, anvinlcreased time of contract with the cams 4 and 5 and the double cam is pro- 'vided for, it being obvious thatbyv adding vwashers 20, the cams y4 and' 5 willy be relatively further lseparated and in consequence reduce the time` inwliicli the cams 4 and 5 remain in contact with the valve Vcam Eduring` the rotary motion of the said cams 4 and 5 with the cam shaft, and, at this point, it should bestated that in the practical application of my 'present invention, the cam shaft is geared with the crank shaft ,so that it makes a half revolution ateachvcomplete revolution of the' 'crank shaft.`

In' Fig. 8, 1 have illustrated how my present valve arrangement can be applied to any puppet valve motor' now in usethu's transforming suoli motor into one having silent and self-grinding valves.

' '1n this latter form, Z designates the valve seat, 10 a gasket applied next to the seat which `may be oiled from' a pipe vcoming from a level system andoil grooves 31-32 communicating with each other in any suitable manner.v y

The slot 36 in the check device, hereinbefore referred to, in practice, is'of such asA Width that it prevents the valve from going beyond the working line as it is oscillated and, at the same time, is sufficient to allow for the desired adjustments of' the cams l and 5 for a wider or closer movement limit of the valves.

In my present construction of valve mechanism, the springs, rods and link connections required in my other structure shown in my copending application, are dispensed with; the mountine of the valve is such that it is a self-grinding one and one that is maintained under such tight closure that a higher engine efficiency from the working agent is obtained with a material reduction in gas consumption.

Instead of forming the valve and the valve seat with but a sigle port, as indicated in Fig. 2, the valve may be formed with two diametrically opposite ports or orifices, as indicated at 25, in Fig. 9, for coperating with similarly arranged ports --25u in the valve seat shown in Fig. l0.

By providing `a plurality of ports in the valve and the seat arranged as stated, larger total ports are provided for my rotary valve mechanism, particularly when the same is to be applied to puppet valve motors.

From the foregoing description taken 1n connection with the accompanying drawings, it is thought the complete constructlon, operation and advantages of my invention Will be readily understood by those skilled in the art.

What I claim is:

l. In a valve mechanism of the charac ter described, the combination with a cyl1nder, a casing having a valve seat including a hollow stem and a port in communicatlon with the compression end of the cylinder above the valve seat, a fluid passage for connection with the intake or exhaust manifold of the engine and a port in the valve seat in connection with the said fluid passage; of an oscillating disk valve, said valve including a stem that passes through the valve seat stem mounted upon the valve seat, means for holding the valve to the seat, engine power controlled means for intermittently oscillating the valve to move it to the open and closed positions, the said engine power controlled means including a rotary shaft and coperative intermittently engaging connections for transmitting alternate oscillations to the valve through the rotation of the said shaft, and devices on the rotary shaft for adjusting the said connection whereby to provide predetermined time movements of the valve.

2. In a valve mechanism of the character' described, the combination with a cylinder, a casing having a valve seat and a port in communication with the compression end of the cylinder above the valve seat, a fluid passage for connection with the intake or exhaust manifold of the engine and a port in the valve seat in connection with the said fluid passage; of an oscillating valve mounted upon the valve seat, means for holding the valve to the seat, engine power controlled means for intermittently oscillating the valve to move it to the open and closed positions, the said engine power con trolled means including a rotary shaft and coperative intermittently engaging connections for transmitting alternate oscillations to the valve through the rotation of the said shaft, the said engine power controlled means including a double cam mounted upon the valve stem, an engine driven cam shaft, and a pair of cams on the said shaft adapted to successively engage the double cam whereby to first oscillate the cam in one direction and then in the opposite direction.

3. In a valve mechanism of the character described, the combination with a cylinder, a casing having a valve seat and a port in communication with the compression end of the cylinder above the valve seat, a lluid passage for connection with the intake or exhaust manifold of the engine and a port in the valve seat in connection with the said fluid passage; of an oscillating valve mounted upon the valve scat, means for holding the valve to the seat, engine power controlled means for intermittently oscillating the valve to move it to the open and closed positions, the said engine power controlled means including a rotary shaft and coperative intermittently engaging connections for transmitting alternate oscillations to the valve through the rotation of the said shaft, the said engine power controlled means including a double cam mounted upon the valve stem, an engine driven cam shaft, and a pair of cams on the said shaft adapted to successively engage the double cam whereby to first oscillate the cam in one direction and then in the opposite direction, and devices for adjusting the said cams whereby to provide for predetermined lengths of engagement of the rotary and the double cam devices for timing the valve oscillations.

4. In a valve mechanism of the character described, the combination with a cylinder, a casing having a valve seat and a port in communication with the compression end of the cylinder above the valve seat, a fluid passage for connection with the intake or exhaust manifold of the engine and a port in the valve seat in connection with the said fluid passage; of an oscillating valve mounted upon the valve seat, means for holding the valve to the seat, engine power controlled means for intermittently oscillating the valve to move it to the open and closed positions, the said engine power controlled means including a rotary shaft and coperative intermittently engaging connections for transmitting alternate oscillations to the .ment'of the rotary and the double cam devices for timing the valve oscillations, the said device including means for holding the cams on the cam shaft spaced apart at predetermined distances, whereby to determine the time of contactA between the said shaft cams and the double cani on the valve stem.

5. In a valve mechanism of the character described7 the combination withvan oscillatory control valve, the said valve including l a stem and a cam on the stem, said cam having oppositely projected radial extensions; of a cam shaft, a pair of cam disks mounted on and rotatable with the said cam shaft, the said disks veach having lateral lugs, the lugs of the two shaft cams being relatively oppositely disposed and adapted for lsuccessively and alternately engaging the opposite 6. rilhe combination with an oscillatable valve having a stein and a cam element on the stein; of a cani shaft having a pair of oppositely acting cams for cooperating with he said valve stem cam, whereby the rof tary motion ot' the cam shaft is converted into an oscillatory motion of the valve stem, and spacing devices for the said cam shaft cams7 whereby the degree of oscillation of the valve may be increased or diminished.

7. In a valve mechanism of the class described in which is included an oscillatable valve having at least one port,` said valve including a stein, and a cam element on the stem, a removable valve seat includinga ihol-y low stem through which the valve stem passes, a rotary shaft', a pair of oppositely acting cams on the shaft that cooperate with `the valve stemcam .element and means stem.

DOMENICO RONCONI.

Copies of this patent may be obtained for five cents each,l by `addressing; theikcoinmissioner of Patents, Washingtml). C. 

